436
FNCA52 TJSJ 030903
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
503 AM AST TUE FEB 3 2026
DISCUSSION
THROUGH AT LEAST MIDWEEK, WINDS WILL REMAIN BREEZY TO WINDY FROM
THE NORTH TO NORTHEAST IN THE WAKE OF A FRONTAL BOUNDARY. MINIMUM
RH VALUES ARE EXPECTED TO REMAIN ABOVE THE FIRE WEATHER THRESHOLDS,
REDUCING THE FIRE WEATHER RISK. ALTHOUGH FUEL MOISTURE CONTENT
AND THE RELATIVE HUMIDITY ARE NOT EXPECTED TO DROP TO CRITICAL
LEVELS, THE STRONGER THAN NORMAL WINDS COULD AID IN THE SPREAD OF
ANY WILDFIRES, STAY VIGILANT.
PRZ014-040915-
SOUTHEAST COASTAL PLAINS-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 40 30 60
TEMP (24H TREND) 82 (-1) 69 (-2) 85
RH % (24H TREND) 66 (-7) 94 (+4) 63
WIND 20FT/EARLY(MPH) NE 21 G28 NE 16 G21 E 19 G25
WIND 20FT/LATE(MPH) NE 21 G28 NE 16 G21 E 19 G25
MIXING HGT(FT-AGL/MSL)2880 3980
TRANSPORT WND (MPH) NE 26 E 15
VENT RATE (KT-FT) 66240 51740
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-040915-
SOUTHERN HILLS-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 50 40 60
TEMP (24H TREND) 77 (-1) 66 (-2) 80
RH % (24H TREND) 71 (-9) 99 (+5) 72
WIND 20FT/EARLY(MPH) NE 17 NE 16 E 14
WIND 20FT/LATE(MPH) NE 17 NE 16 E 14
MIXING HGT(FT-AGL/MSL)2650 3600
TRANSPORT WND (MPH) NE 25 E 15
VENT RATE (KT-FT) 58300 46800
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-040915-
NORTH COASTAL PLAINS-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 50 60 70
TEMP (24H TREND) 79 (-1) 69 (-1) 82
RH % (24H TREND) 75 (-7) 100 (+3) 74
WIND 20FT/EARLY(MPH) NE 20 G23 NE 20 G23 E 17 G20
WIND 20FT/LATE(MPH) NE 20 G23 NE 20 G23 E 17 G20
MIXING HGT(FT-AGL/MSL)2300 2990
TRANSPORT WND (MPH) NE 22 E 17
VENT RATE (KT-FT) 43700 44850
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-040915-
NORTHERN HILLS-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 50 40 70
TEMP (24H TREND) 77 (0) 67 (-1) 81
RH % (24H TREND) 76 (-9) 99 (+1) 74
WIND 20FT/EARLY(MPH) NE 19 NE 19 E 16
WIND 20FT/LATE(MPH) NE 19 NE 19 E 16
MIXING HGT(FT-AGL/MSL)2010 3120
TRANSPORT WND (MPH) NE 21 E 17
VENT RATE (KT-FT) 36180 46800
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-040915-
WEST COAST-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 20 60
TEMP (24H TREND) 81 (+1) 68 (-2) 85
RH % (24H TREND) 68 (-13) 96 (+2) 67
WIND 20FT/EARLY(MPH) NE 23 NE 23 E 18
WIND 20FT/LATE(MPH) NE 23 NE 23 E 18
MIXING HGT(FT-AGL/MSL)3320 3640
TRANSPORT WND (MPH) NE 29 E 15
VENT RATE (KT-FT) 83000 47320
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-040915-
EASTERN INTERIOR-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 60 60 70
TEMP (24H TREND) 77 (-2) 67 (-2) 81
RH % (24H TREND) 77 (-4) 100 (+1) 77
WIND 20FT/EARLY(MPH) NE 18 NE 18 E 14
WIND 20FT/LATE(MPH) NE 18 NE 18 E 14
MIXING HGT(FT-AGL/MSL)1500 2910
TRANSPORT WND (MPH) N 18 E 13
VENT RATE (KT-FT) 24000 32010
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-040915-
LUQUILLO MOUNTAIN RANGE-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 60 70 70
TEMP (24H TREND) 75 (-1) 65 (-2) 77
RH % (24H TREND) 72 (-9) 100 (0) 77
WIND 20FT/EARLY(MPH) NE 13 NE 13 E 12
WIND 20FT/LATE(MPH) NE 13 NE 13 E 12
MIXING HGT(FT-AGL/MSL)1290 2820
TRANSPORT WND (MPH) N 15 E 15
VENT RATE (KT-FT) 16770 36660
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-040915-
CENTRAL MOUNTAIN RANGE-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 60 40 70
TEMP (24H TREND) 77 (+1) 64 (-2) 80
RH % (24H TREND) 68 (-11) 100 (+1) 71
WIND 20FT/EARLY(MPH) NE 20 NE 19 E 14
WIND 20FT/LATE(MPH) NE 20 NE 19 E 14
MIXING HGT(FT-AGL/MSL)2230 3310
TRANSPORT WND (MPH) NE 22 E 14
VENT RATE (KT-FT) 42370 39720
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-040915-
CAYEY MOUNTAIN RANGE-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 60 50 70
TEMP (24H TREND) 75 (-2) 65 (-2) 77
RH % (24H TREND) 75 (-7) 100 (0) 80
WIND 20FT/EARLY(MPH) N 14 NE 12 E 12
WIND 20FT/LATE(MPH) N 14 NE 12 E 12
MIXING HGT(FT-AGL/MSL)1970 3280
TRANSPORT WND (MPH) N 24 E 17
VENT RATE (KT-FT) 41370 49200
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-040915-
VIEQUES-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 50 50 60
TEMP (24H TREND) 85 (0) 70 (-1) 85
RH % (24H TREND) 61 (-4) 99 (0) 63
WIND 20FT/EARLY(MPH) NE 23 G28 NE 23 G28 E 16 G20
WIND 20FT/LATE(MPH) NE 23 G28 NE 23 G28 E 16 G20
MIXING HGT(FT-AGL/MSL)3260 3080
TRANSPORT WND (MPH) NE 29 E 22
VENT RATE (KT-FT) 81500 58520
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-040915-
CULEBRA-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 40 60 60
TEMP (24H TREND) 85 (0) 71 (-2) 85
RH % (24H TREND) 63 (-6) 98 (+1) 65
WIND 20FT/EARLY(MPH) NE 23 G28 NE 23 G28 E 17 G21
WIND 20FT/LATE(MPH) NE 23 G28 NE 23 G28 E 17 G21
MIXING HGT(FT-AGL/MSL)3260 3020
TRANSPORT WND (MPH) NE 29 E 28
VENT RATE (KT-FT) 81500 72480
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-040915-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 10 50
TEMP (24H TREND) 85 (+2) 69 (-2) 87
RH % (24H TREND) 59 (-12) 91 (+4) 61
WIND 20FT/EARLY(MPH) NE 25 G32 NE 23 G26 E 18 G22
WIND 20FT/LATE(MPH) NE 25 G32 NE 23 G26 E 18 G22
MIXING HGT(FT-AGL/MSL)3660 4330
TRANSPORT WND (MPH) NE 23 E 13
VENT RATE (KT-FT) 73200 47630
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-040915-
SAINT THOMAS AND SAINT JOHN-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 60 60 60
TEMP (24H TREND) 85 (+1) 70 (-4) 85
RH % (24H TREND) 59 (-10) 100 (+4) 62
WIND 20FT/EARLY(MPH) NE 24 G30 NE 25 G30 E 17 G21
WIND 20FT/LATE(MPH) NE 24 G30 NE 25 G30 E 17 G21
MIXING HGT(FT-AGL/MSL)3160 3220
TRANSPORT WND (MPH) NE 30 E 28
VENT RATE (KT-FT) 82160 77280
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-040915-
ST CROIX-
503 AM AST TUE FEB 3 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 70 50 50
TEMP (24H TREND) 86 (+1) 71 (-2) 86
RH % (24H TREND) 63 (-5) 100 (+3) 62
WIND 20FT/EARLY(MPH) NE 20 G25 NE 23 G27 E 13
WIND 20FT/LATE(MPH) NE 20 G25 NE 23 G27 E 13
MIXING HGT(FT-AGL/MSL)1620 4080
TRANSPORT WND (MPH) NE 26 E 17
VENT RATE (KT-FT) 37260 61200
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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